You might as well compare with these Back Items so you can decide which Back Items you're gonna use for ninja Saga Pvp or in Hunting House for easier killing the boss or your opponent in ninja saga PvP
These Back Items might have better effect . Here we go :

• Karasu Miya Falcon

  Increase dodge rate by 6%.
• S3 Energetical Can

  Increase attack damage by 10% and Combustion chance by 18%. (Minimum requirement of 1 Attribute Point in Fire to activate combustion effect)
• Star Dawn Harp

  Increases users agility by 1. Recover CP after HP reduction. (Amount: 10% of HP reduction) Recover HP by 2% when being put on a debuff.
• Bell of Fortune

  6% chance to restrict enemy who attack user for 1 turn. Restriction target will not be able to use any skills.
• Flag: Dragon Symbol
• Purple Dragon umbrella
• Mother's Hug (II)

  Recover 150 HP and 3% HP at the start of every turn.
• Raijin Raijinco
• Silver Torch of Zeus

  Increase mission gold reward by 300.
• Colorful Moai Egg

  Reduce damage taken by 100 and recover 10% extra CP when charge.
• S52 Gold Dragon Scroll

  Reduce damage taken by 7%. Ignore targets dodge rate by 5%.
• Sakura Straw Hat

  Recovers 2% of users max HP every turn.
• S12 Ancient Blood Evil Gourd

  Increase max. HP by 5%. But reduce Max.CP by 1%.
• Clouds And Mist Raijinco
• Extra Large Presents Bag

  A large present bag, but nobody knows what it contains.
• Three-stringed Lute Guitar
• Scroll: Kinjutsu I
• Big Cask

  Increase max.HP by 15% but reduce max. CP by 5%.
• S2 Solar Aura

  Increase agility by 3 and accuracy by 7% .
• Light Cry Raijinco
• Nutcracker

  Increases Max. HP by 4% and damage by 3%.
• Purple Mixing Yellow Umbrella
• S15 Seitenken

  Recover CP after HP reduction. (Amount: 20% of HP reduction)
• Ninja Bunny Doll

  Increase 2% damage and ignore 3% targets dodge.
• S63 Stormbringer

  Increases dodge rate by 5%. Has 50% chance to absorb 2% HP of enemy who attack you.
• Four-Point Shuriken
• S5 The Guider

  Increase purify chance by 7%. Recover 8% HP when purify. Recovers 4% of the user's max HP.